[Mp4-tech] subbands in Mpeg4 AAC

[Ashish Malot]

Hi,
    All the info is available in the standard. Anyway....
1. No of subbands vary for Long, Short blocks and for different sampling
freqs.
2. Yes.
3. Standard allows for all or chosen subbands (ur wish...). TNS is
applied only to higher part of the spectrum so TNS is not ON for All the
subbands. Refer standard.
bye,
Ashish Malot
Shreya Pathak wrote:
>
> Hi,
>   1)I wanted to how many subbands are there in Mpeg4 AAC.
>   2) Are the subbands and scale factor bands same ?
>   3) Can Joint stereo coding, PNS and TNS be applied to all subbands
> or only some parts of subbands.
> Please reply immediately.
> Thanks and Regards
> Shreya
>
>
> [Image]
>
>    ----------------------------------------------------------------
> _______________________________________________
> NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have.
>
> Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php
>